<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        const a = 100 + 10 // 110
        const b = 100 + '10' // 10010
        const c = true + '10' // 'true10'
    </script>
</body>

</html>